Suppose a bus departs from a station on Friday at 9:20 am and it travels at a constant speed of A kmih. Two hours later, a second bus departs from the same station heading in the same direction with a speed of 60 kmlh. For A, choose any of the following integer values of 50, 51, 53 or 54. Using the information given with your chosen values for A, determine the day and time on the clock at which the buses are both at the same distance from the station. a. Solve by using geometric series. [15 marks]